rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=e8d/1/0x4000000000000000 softirq=49403/49413 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P3782/1:b..l
(detected by 0, t=10505 jiffies, g=61485, q=118 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3846 Comm: kworker/u4:14 Not tainted 5.19.0-rc4-syzkaller-00014-g941e3e791269 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-0:4)
RIP: 0010:lock_is_held include/linux/lockdep.h:279 [inline]
RIP: 0010:rcu_read_lock_sched_held+0x2e/0x70 kernel/rcu/update.c:125
Code: 01 00 00 00 e8 23 3c 13 08 85 c0 75 06 44 89 e0 41 5c c3 e8 24 9c 00 00 84 c0 74 41 e8 8b b8 00 00 84 c0 74 38 be ff ff ff ff <48> c7 c7 a0 3a d8 8b e8 b6 3a 13 08 85 c0 75 d3 65 8b 05 cb d7 9e
RSP: 0018:ffffc900003f8e30 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff88802f212340 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 00000000ffffffff RDI: ffffffff8bd8d7f0
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8880b9b2a600 R14: ffff8880b9b2a500 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f952339d090 CR3: 0000000073c3b000 CR4: 00000000003526e0
Call Trace:
<IRQ>
trace_hrtimer_cancel include/trace/events/timer.h:293 [inline]
debug_deactivate kernel/time/hrtimer.c:482 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0xaac/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x13/0x60 kernel/kcov.c:199
Code: 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 b9 d7 88 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 <65> 48 8b 14 25 80 6f 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82
RSP: 0018:ffffc90003bbf908 EFLAGS: 00000246
RAX: 0000000080000000 RBX: ffff88807f0e885c RCX: 0000000000000000
RDX: ffff88803401e240 RSI: ffffffff8421b3d8 RDI: 0000000000000001
RBP: ffff88807482a87d R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000039 R11: 0000000000000001 R12: 0000000000000039
R13: ffff88807482a88c R14: ffff88807f0e8858 R15: 0000000000000003
string_nocheck lib/vsprintf.c:647 [inline]
string+0x148/0x3d0 lib/vsprintf.c:725
vsnprintf+0x219/0x1660 lib/vsprintf.c:2782
set_worker_desc+0x193/0x1b0 kernel/workqueue.c:4642
wb_workfn+0xca/0x1230 fs/fs-writeback.c:2211
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
process_scheduled_works kernel/workqueue.c:2352 [inline]
worker_thread+0x803/0x1080 kernel/workqueue.c:2441
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
</TASK>
task:kworker/u4:10 state:R running task stack:23840 pid: 3782 ppid: 2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6766
irqentry_exit+0x31/0x80 kernel/entry/common.c:428
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5633
Code: f2 a4 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90003d1fb98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920007a3f75 RCX: f9ce8a928c5cff00
RDX: 1ffff11005bac563 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff9067b907
R10: fffffbfff20cf720 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bd83b60 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:269 [inline]
rcu_read_lock include/linux/rcupdate.h:695 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
</TASK>
rcu: rcu_preempt kthread starved for 10505 jiffies! g61485 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28864 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1999
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2187
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 10832 Comm: syz-executor.5 Not tainted 5.19.0-rc4-syzkaller-00014-g941e3e791269 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:518
print_other_cpu_stall kernel/rcu/tree_stall.h:623 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:769 [inline]
rcu_pending kernel/rcu/tree.c:3977 [inline]
rcu_sched_clock_irq+0x2311/0x2370 kernel/rcu/tree.c:2675
update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_many_cond+0x499/0x1110 kernel/smp.c:988
Code: 01 89 ee e8 69 98 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 e8 09 9c 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 21 0a 00 00 8b 43 08 31
RSP: 0018:ffffc900047a7a88 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9b3f740 RCX: 0000000000000000
RDX: ffff88802d87e140 RSI: ffffffff816efb77 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017367ee9
R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1231 [inline]
text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1419
text_poke_flush arch/x86/kernel/alternative.c:1589 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1586 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:830
static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
tracepoint_remove_func kernel/tracepoint.c:417 [inline]
tracepoint_probe_unregister+0x5d2/0xbe0 kernel/tracepoint.c:551
bpf_raw_tp_link_release+0x51/0xa0 kernel/bpf/syscall.c:3110
bpf_link_free+0xe6/0x1b0 kernel/bpf/syscall.c:2693
bpf_link_put+0x161/0x1b0 kernel/bpf/syscall.c:2719
bpf_link_release+0x33/0x40 kernel/bpf/syscall.c:2728
__fput+0x277/0x9d0 fs/file_table.c:317
task_work_run+0xdd/0x1a0 kernel/task_work.c:177
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:169 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f952323bd4b
================================
WARNING: inconsistent lock state
5.19.0-rc4-syzkaller-00014-g941e3e791269 #0 Not tainted
--------------------------------
inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
syz-executor.5/10832 [HC1[1]:SC0[0]:HE0:SE1] takes:
ffffffff8beb2e98 (vmap_area_lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
ffffffff8beb2e98 (vmap_area_lock){?.+.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805
{HARDIRQ-ON-W} state was registered at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
alloc_vmap_area+0xa49/0x1f00 mm/vmalloc.c:1586
__get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2453
__vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3125
__vmalloc_node mm/vmalloc.c:3230 [inline]
__vmalloc+0x69/0x80 mm/vmalloc.c:3244
pcpu_mem_zalloc mm/percpu.c:516 [inline]
pcpu_mem_zalloc+0x51/0xa0 mm/percpu.c:508
pcpu_alloc_chunk mm/percpu.c:1454 [inline]
pcpu_create_chunk+0xd7/0x930 mm/percpu-vm.c:338
pcpu_alloc+0x1012/0x13d0 mm/percpu.c:1834
alloc_kmem_cache_cpus.constprop.0+0x29/0xc0 mm/slab.c:1729
do_tune_cpucache+0x37/0x230 mm/slab.c:3844
enable_cpucache+0x3c/0xa0 mm/slab.c:3938
kmem_cache_init_late+0x33/0x66 mm/slab.c:1276
start_kernel+0x2f5/0x48f init/main.c:1058
secondary_startup_64_no_verify+0xce/0xdb
irq event stamp: 22968
hardirqs last enabled at (22967): [<ffffffff89800c8b>] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
hardirqs last disabled at (22968): [<ffffffff8976c73b>] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106
softirqs last enabled at (1968): [<ffffffff81477753>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last enabled at (1968): [<ffffffff81477753>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
softirqs last disabled at (1947): [<ffffffff81477753>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (1947): [<ffffffff81477753>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(vmap_area_lock);
<Interrupt>
lock(vmap_area_lock);
*** DEADLOCK ***
4 locks held by syz-executor.5/10832:
#0: ffffffff8bdebe68 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_unregister+0x2e/0xbe0 kernel/tracepoint.c:548
#1: ffffffff8bc31530 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_disable+0xe/0x20 kernel/jump_label.c:214
#2: ffffffff8be64588 (jump_label_mutex){+.+.}-{3:3}, at: jump_label_lock kernel/jump_label.c:27 [inline]
#2: ffffffff8be64588 (jump_label_mutex){+.+.}-{3:3}, at: static_key_disable_cpuslocked+0x108/0x1b0 kernel/jump_label.c:205
#3: ffffffff8bc4c748 (text_mutex){+.+.}-{3:3}, at: arch_jump_label_transform_apply+0xe/0x20 arch/x86/kernel/jump_label.c:145
stack backtrace:
CPU: 0 PID: 10832 Comm: syz-executor.5 Not tainted 5.19.0-rc4-syzkaller-00014-g941e3e791269 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_usage_bug kernel/locking/lockdep.c:3961 [inline]
valid_state kernel/locking/lockdep.c:3973 [inline]
mark_lock_irq kernel/locking/lockdep.c:4176 [inline]
mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632
mark_lock kernel/locking/lockdep.c:4596 [inline]
mark_usage kernel/locking/lockdep.c:4524 [inline]
__lock_acquire+0x14ad/0x5660 kernel/locking/lockdep.c:5007
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805
check_heap_object mm/usercopy.c:176 [inline]
__check_object_size mm/usercopy.c:250 [inline]
__check_object_size+0x1f8/0x700 mm/usercopy.c:212
check_object_size include/linux/thread_info.h:199 [inline]
__copy_from_user_inatomic include/linux/uaccess.h:62 [inline]
copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline]
copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31
copy_code arch/x86/kernel/dumpstack.c:91 [inline]
show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121
show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149
__show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74
show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:518
print_other_cpu_stall kernel/rcu/tree_stall.h:623 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:769 [inline]
rcu_pending kernel/rcu/tree.c:3977 [inline]
rcu_sched_clock_irq+0x2311/0x2370 kernel/rcu/tree.c:2675
update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_many_cond+0x499/0x1110 kernel/smp.c:988
Code: 01 89 ee e8 69 98 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 e8 09 9c 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 21 0a 00 00 8b 43 08 31
RSP: 0018:ffffc900047a7a88 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9b3f740 RCX: 0000000000000000
RDX: ffff88802d87e140 RSI: ffffffff816efb77 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017367ee9
R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1231 [inline]
text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1419
text_poke_flush arch/x86/kernel/alternative.c:1589 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1586 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:830
static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
tracepoint_remove_func kernel/tracepoint.c:417 [inline]
tracepoint_probe_unregister+0x5d2/0xbe0 kernel/tracepoint.c:551
bpf_raw_tp_link_release+0x51/0xa0 kernel/bpf/syscall.c:3110
bpf_link_free+0xe6/0x1b0 kernel/bpf/syscall.c:2693
bpf_link_put+0x161/0x1b0 kernel/bpf/syscall.c:2719
bpf_link_release+0x33/0x40 kernel/bpf/syscall.c:2728
__fput+0x277/0x9d0 fs/file_table.c:317
task_work_run+0xdd/0x1a0 kernel/task_work.c:177
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:169 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f952323bd4b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffdbe998a70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f952323bd4b
RDX: 00007f95233a0608 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007f952339d960 R08: 0000000000000000 R09: 00007f95233a0610
R10: 00007ffdbe998b70 R11: 0000000000000293 R12: 00000000000b94fc
R13: 00007ffdbe998b70 R14: 00007f952339bf60 R15: 0000000000000032
</TASK>
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffdbe998a70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f952323bd4b
RDX: 00007f95233a0608 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007f952339d960 R08: 0000000000000000 R09: 00007f95233a0610
R10: 00007ffdbe998b70 R11: 0000000000000293 R12: 00000000000b94fc
R13: 00007ffdbe998b70 R14: 00007f952339bf60 R15: 0000000000000032
</TASK>
----------------
Code disassembly (best guess):
0: 01 00 add %eax,(%rax)
2: 00 00 add %al,(%rax)
4: e8 23 3c 13 08 callq 0x8133c2c
9: 85 c0 test %eax,%eax
b: 75 06 jne 0x13
d: 44 89 e0 mov %r12d,%eax
10: 41 5c pop %r12
12: c3 retq
13: e8 24 9c 00 00 callq 0x9c3c
18: 84 c0 test %al,%al
1a: 74 41 je 0x5d
1c: e8 8b b8 00 00 callq 0xb8ac
21: 84 c0 test %al,%al
23: 74 38 je 0x5d
25: be ff ff ff ff mov $0xffffffff,%esi
* 2a: 48 c7 c7 a0 3a d8 8b mov $0xffffffff8bd83aa0,%rdi <-- trapping instruction
31: e8 b6 3a 13 08 callq 0x8133aec
36: 85 c0 test %eax,%eax
38: 75 d3 jne 0xd
3a: 65 gs
3b: 8b .byte 0x8b
3c: 05 .byte 0x5
3d: cb lret
3e: d7 xlat %ds:(%rbx)
3f: 9e sahf